Had a real good shop balance my tires today with a Hunter GSP9700 balancer. they couldn't do "force" balancing b/c they said the MT lug pattern would give false readings. They recomended me ditching the stick on weights and doing weights on both edges of the rim. So We did that route. All tires got zero'd out before being put back on the Truck. however, the 4th tire, RR they told me was EGG shaped. What causes a tire to become Egg shaped? not keeping it aligned? not keeping it balanced? It's only been on the RR for 1 tank of gas. Last week I rotated my tires. so the Egg tire has been on the RF for the past 10 months really. should I get it shaved? warranttied? Now my 3 tires are smooth as glas... no joke... and the RR seems to hop a bit. uh boy... FYI my tires are 35x12.50R15 Dunlop Mud Rovers with 75% left and only 1.5yrs old.